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What is the minimal particle of matter?
Atoms.
What are the three main states of matter and describe the difference in their internal energy?
Solid, liquid and gas. Solid = Few internal energy, Liquid = more internal energy and Gas = more energy than the rest because of the space.
Describe the process: melting.
Melting is the change from solid to liquid.
Describe the process: Freezing
Is the change from liquid to solid.
Describe the processes: Evaporation/boiling.
Is the change from liquid to gaseous state.
Describe the process: Condensation.
Is the change from gaseous to liquid.
What is the state of the freezing point and boiling point for water?
Freezing - 0 degrees and boiling - 100 dregrees.
Recall the density formula and tell the meaning of density.
Density is the measurement of how much matter concentrates in a specific space. To calculate density = mass divided
Say the difference between physical and chemical changes and give at least 3 examples.
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